222012211340 has 24 divisors (see below), whose sum is σ = 468920597040. Its totient is φ = 88291560128.

The previous prime is 222012211321. The next prime is 222012211361. The reversal of 222012211340 is 43112210222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32079230 + ... + 32086149.

It is an arithmetic number, because the mean of its divisors is an integer number (19538358210).

Almost surely, 2^222012211340 is an apocalyptic number.

222012211340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012211340 is an abundant number, since it is smaller than the sum of its proper divisors (246908385700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222012211340 is a wasteful number, since it uses less digits than its factorization.

222012211340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64165561 (or 64165559 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 222012211340 its reverse (43112210222), we get a palindrome (265124421562).

The spelling of 222012211340 in words is "two hundred twenty-two billion, twelve million, two hundred eleven thousand, three hundred forty".